﻿using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
namespace AsyncCallback
{
   public class Calculator
    {
       public int Add(int argument1, int argument2)
       {
           Trace.WriteLine("adding...");
           return argument1 + argument2;
       }

       public int Subtraction(int argument1, int argument2)
       {
           return argument1 - argument2;
       }

       public int Divide(int argument1, int argument2)
       {
           return argument1 / argument2;
       }
    }
}
